The Advantages of Genetically Modified Food Supplies

pumpkincentersulkyBiotechnology

Dec 16, 2012 (5 years and 21 days ago)

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Genetic Engineering

What is Genetic Engineering?


-

the
deliberate
(not accidental) alteration of
the genetic material of an organism.



-

an advanced technology


way beyond
selecting which plant to cross with
another(watch out Mendel)



-

often involves the insertion of copies of a
gene from one organism into another.


How can this be done?


DNA is manipulated


genes substituted from
one organism into another to achieve a
desired offspring or product.

Genes added to Corn

Genetic Engineering in Plants


increases speed of growth


Allows for faster production, increased food
supply



increased disease resistance






-

allows for the reduction of use of pesticides or
herbicides




increased nutritional content



More examples…

Looks really good…

Trees engineered to grow quickly


United Streaming Video


The Advantages of Genetically Modified Food
Supplies




How Stuff Works


Timber

http://www.youtube.com/watch?v=bIJQRNYyHY
4


Not just plants, animals too..

Engineered to


-
Grow faster

-
Increase muscle / less fat

-
Produce milk / eggs with greater nutritional
value

So it’s all good, right?

GMO’s OH MY!


Genetically Modified Organisms… Especially
FOOD! Two sides to the debate


Scientists Address the Opposition to
Genetically Modified Crops


http://player.discoveryeducation.com/index.cf
m?guidAssetId=85B20568
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And Medicines..


Insulin, needed by diabetics, is produced by
genetically engineered bacteria.




http://www.youtube.com/watch?v=m3925Pw
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VwU


Why use Genetic Engineering?


Prior to 1978, diabetics had to use insulin
from bovine or swine (cattle/pig) sources.



This insulin caused allergic reactions in ~5% of
people.



The genetically engineered insulin is much
better tolerated by humans.

Bacteria make insulin

Genetic Engineering and Hemophilia


Hemophiliacs have a bleeding disorder due to
the lack of a specific protein, called Factor VIII.



Transfused Factor VIII from human donors has
resulted in the transmission of disease to
hemophiliacs from donors (HIV in the 1980s)



Genetic engineering has been able to produce
Factor VIII that carries none of these risks.

Genetic Engineering Concerns


-

Are genetically engineered foods safe?



-

Will there be unintended consequences?




-

to plants



-

to humans



-

to wildlife

Genetically Modified Foods


Read the article from The Science Creative
Quarterly



Answer the questions from
the reading.